Download - How to Enable the SAP Web Application Server to Run in a Cluster (Sun Cluster Data Service for SAP Web Application Server Guide for Solaris OS)

2/15/2015 HowtoEnabletheSAPWebApplicationServertoRuninaCluster(SunClusterDataServiceforSAPWebApplicationServerGuideforSolarisOS)

http://docs.oracle.com/cd/E1905001/sun.cluster31/8176571/installconfigproc136/index.html 1/5

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DocumentationHome>SunClusterDataServiceforSAPWebApplicationServerGuideforSolarisOS>InstallingandConfiguringSunClusterHAforSAPWebApplicationServer>InstallingandConfiguringSAPWebApplicationServer>HowtoEnabletheSAPWebApplicationServertoRuninaCluster

HowtoEnabletheSAPWebApplicationServertoRuninaClusterThefollowingresourcegroupsarecreatedinthisprocedure:

SAPcentralservicesresourcegroup,tocontainthefollowingresources:

SAPenqueueserverresource

SAPmessageserverresource

Logicalhostnamefortheseresources

SAPreplicaserverresourcegroup,tocontainthefollowingresources:

SAPreplicaserverresource

Logicalhostnameforthisresource

SAPwebapplicationserverresourcegroup,tocontainthefollowingresources:

SAPwebapplicationservercomponentresource

Logicalhostnameforthisresource,iftheresourceisconfiguredasafailoverresource

NotethattheproceduretoenabletheSAPJ2EEenginetoruninaclusterislocatedinaseparatesection.SeeHowtoEnabletheSAPJ2EEEnginetoRuninaCluster.

1. Becomesuperuseronaclusternode.

2. CreatearesourcegroupfortheSAPcentralservices.

TheSAPcentralservicesresourcegroupisafailoverresourcegrouptocontaintheSAPenqueueserverresource,theSAPmessageserverresource,andthelogicalhostnamefortheseresources.

# scrgadma g centralrg

a

Specifiesthatanewresourcegroupistobeadded.

g centralrg

Specifiesthenameoftheresourcegrouptobeadded.Thisnamecanbeyourchoicebutmustbeuniquefortheresourcegroupswithinthecluster.

3. AddalogicalhostnameresourcetotheresourcegroupthatyoucreatedinStep2.

# scrgadmaL g centralrg l centrallogicalhostname[ n netiflist]

a

SunClusterDataServiceforSAPWebApplicationServerGuideforSolarisOS



Specifiesthatanewconfigurationistobeadded.

L

Specifiesthatalogicalhostnameresourceistobeadded.

g centralrg

SpecifiesthelogicalhostnameresourcetobeaddedtotheresourcegroupthatyoucreatedinStep2.

l centrallogicalhostname

SpecifiesthelogicalhostnameoftheSAPcentralservicesresource.

n netiflist

Specifiesacommaseparatedlistofnetworkinterfaces.Allnodesinthenodelistoftheresourcegroupmustberepresentedinthelistofnetworkinterfaces.Specifyingalistofnetworkinterfacesisoptional.Ifyouomitthelist,anattemptismadeforeachnodetodiscoveranetworkinterfaceonthesubnetthatthehostnamelistidentifies.

4. BringonlinetheSAPcentralservicesresourcegroup.

# scswitchZ g centralrg

Z

Specifiesthataresourcegroupistobebroughtonline.

g centralrg

Specifiesthenameoftheresourcegrouptobebroughtonline.ThisnameisthenameoftheresourcegroupthatwascreatedinStep2.

5. CreatearesourcegroupfortheSAPreplicaserver.

TheSAPreplicaserverresourcegroupisafailoverresourcegrouptocontaintheSAPreplicaserverresourceandthelogicalhostnameforthisresource.

# scrgadma g replrg

a


g replrg

Specifiesthenameoftheresourcegrouptobeadded.Thisnamecanbeyourchoicebutmustbeuniquefortheresourcegroupswithinthecluster.

6. AddalogicalhostnameresourcetotheresourcegroupthatyoucreatedinStep5.

# scrgadmaL g replrg l saprepllogicalhostname[ n netiflist]

a


L


g replrg


l saprepllogicalhostname

SpecifiesthelogicalhostnameoftheSAPreplicaserverresource.



n netiflist


7. BringonlinetheSAPreplicaserverresourcegroup.

# scswitchZ g replrg

Z


g replrg


8. SetweakpositiveaffinitybetweentheSAPcentralservicesresourcegroupandtheSAPreplicaserverresourcegroup.

Theweakpositiveaffinitysettingensuresthat,incaseoffailover,theSAPcentralservicesresourcegroupfailsovertothenodewheretheSAPreplicaserverresourcegrouphasbeenrunning.

# scrgadmc g centralrg yRG_affinities=+ replrg

c

Specifiesthataresourcegroupistobemodified

g centralrg

Specifiesthenameoftheresourcegrouptobemodified

yRG_affinities=+ replrg

Specifiesthatthecentralrgresourcegrouphasweakpositiveaffinitywiththereplrgresourcegroup

9. IftheSAPcentralservicesresourcegroupandtheSAPreplicaserverresourcegroupareonlineonthesamenode,switchoneofthemtoanothernode.

Thetworesourcegroupsmustbemasteredondifferentnodesbeforethestrongnegativeaffinitycanbesetbetweentheresourcegroups.

# scswitchz g rg h node

z

Specifiesthataresourcegroupistobeswitchedtoanothernode.

g rg

Specifiesthenameoftheresourcegrouptobeswitched.ThisresourcegroupcanbeeithertheSAPcentralservicesresourcegrouportheSAPreplicaserverresourcegroup.

h node

Specifiesthenodetowhichtheresourcegroupistobeswitched.

10. SetstrongnegativeaffinitybetweentheSAPreplicaserverresourcegroupandtheSAPcentralservicesresourcegroup.

Thestrongnegativeaffinitysettingensuresthatnodefailoverbehaviorisappropriate.TheSAPcentralservicesresourcegroupfailsovertothenodewheretheSAPreplicaserverresourcegrouphasbeenrunning.TheSAPreplicaserverresourcegroupthenfailsovertoanotheravailablenode.

TheSAPreplicaserverresourcegroupisneverbroughtonlinenorallowedtoremainonlineonanodeonwhichtheSAPcentralservicesresourcegroupisonline.

# scrgadmc g replrg yRG_affinities= centralrg



c

Specifiesthataresourcegroupistobemodified

g replrg

Specifiesthenameoftheresourcegrouptobemodified

yRG_affinities= centralrg

Specifiesthatthereplrgresourcegrouphasstrongnegativeaffinitywiththecentralrgresourcegroup

11. CreatearesourcegroupfortheSAPwebapplicationservercomponent.

TheSAPwebapplicationserverresourcegroupcanbeconfiguredasafailoverorscalableresourcegrouptocontaintheresourcefortheSAPwebapplicationservercomponent.IftheSAPwebapplicationserverisconfiguredasafailoverresource,thelogicalhostnameforthisresourceisalsocontainedintheSAPwebapplicationserverresourcegroup.

Tocreateafailoverresourcegroup,runthefollowingcommand.

# scrgadma g webasrg

Tocreateascalableresourcegroup,runthefollowingcommand.

# scrgadma g scalwebasrg\yMaximum_primaries= value yDesired_primaries= value

a


g webasrg

Specifiesthenameofthefailoverresourcegrouptobeadded.Thisnamecanbeyourchoicebutmustbeuniquefortheresourcegroupswithinthecluster.

g scalwebasrg

Specifiesthenameofthescalableresourcegrouptobeadded.Thisnamecanbeyourchoicebutmustbeuniquefortheresourcegroupswithinthecluster.

yMaximum_primaries= value

Specifiesthemaximumnumberofprimarynodesforthisscalableresourcegroup.

yDesired_primaries= value

Specifiesthedesirednumberofprimarynodesforthisscalableresourcegroup.

12. IftheresourcegroupthatyoucreatedinStep11isconfiguredasafailoverresourcegroup,addalogicalhostnameresourcetotheresourcegroup.

IftheresourcegroupthatyoucreatedinStep11isconfiguredasascalableresourcegroup,skipthisstep.

# scrgadmaL g webasrg l webaslogicalhostname[ n netiflist]

a


L


g webasrg




Previous:HowtoInstallandConfiguretheSAPJ2EEEngine Next:HowtoEnabletheSAPJ2EEEnginetoRuninaCluster

l webaslogicalhostname

SpecifiesthelogicalhostnameoftheSAPwebapplicationservercomponentresource.

n netiflist


13. BringonlinetheSAPwebapplicationserverresourcegroup.

# scswitchZ g webasrg

Z


g webasrg


14. (Optional)Considerconfiguringyourclustertooffloadnoncriticalresourcegroups.

Youmightplantorunanoncritical,lowerprioritySAPwebapplicationservercomponentresourceonanodetowhichacritical,higherprioritySAPcentralservicesresourcecanfailover.Inthissituation,considersettingstrongnegativeaffinitybetweentheresourcegroups.Thissettingensuresthat,ifahigherprioritySAPcentralservicesresourcefailsovertothenodewherealowerprioritySAPwebapplicationservercomponentresourceisrunning,thelowerpriorityresourceisoffloaded,therebyautomaticallyfreeingthenode'sresourcestobeusedforthecriticalSAPcentralservicesresource.

# scrgadmc g webasrg yRG_affinities= centralrg

c

Specifiesthataresourcegroupistobemodified.

g webasrg

Specifiesthenameoftheresourcegrouptobemodified.

yRG_affinities= centralrg

Specifiesthatthewebasrgresourcegrouphasstrongnegativeaffinitywiththecentralrgresourcegroup.Ifthecentralrgresourcegroupfailsovertothenodewherethewebasrgresourcegroupisrunning,thewebasrgresourcegroupisoffloaded.

15. CopyallsystemfilesthatwerechangedduringtheSAPWebApplicationServerinstallationandconfigurationprocesstoallthenodesthataretoruntheSAPWebApplicationServerresources.Thesefilesmightincludethefollowing:

/etc/passwd

/etc/group

/etc/system

/etc/services

2010,OracleCorporationand/oritsaffiliates

Download - How to Enable the SAP Web Application Server to Run in a Cluster (Sun Cluster Data Service for SAP Web Application Server Guide for Solaris OS)

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